Milk-cooler.



BATENTED APR.'14,' 1908.

HQ (1. ROOT. MILK COOLER. APPLICATION FILED FEB. 7, 1908.

n: NORRIS PETERS co., WASHINGTON, D. c.

W ITNESSES 0/. /KM

UNITED STATES PATENT OFFICE.

HENRY O. ROOT, OF WESTGROVE, PENNSYLVANIA, ASSIGNOR TO THE BOOT DAIRY SUPPLY COMPANY, OF WESTGROVE, PENNSYLVANIA, A CORPORATION.

MILK-COOLER.

Specification of Letters Patent.

Patented April 14, 1908.

Application filed February 7, 1908. Serial No. 414,733.

. To all whom it may concern:

Be it known that I, HENRY 0. R001, a citizen of the United States, residing at WVestgrove, in the county of Chester and State of Pennsylvania, have invented certain new and useful Improvements in Milk-Coolers, of which the following is a specification.

My said invention consists in certain improvements in the details of construction of that class of liquid coolers designed particularly for cooling milk, which embodies a series of cylinders supported in a suitable rack or frame, and comprises means for supporting said cylinders so that each one may be adjusted or removed and replaced without disturbing the position of the other cylinders, all as will be hereinafter more fully described and claimed.

Referring to the accompanying drawings which are made a part hereof and on which similar reference characters indicate similar parts, Figure 1 is a side elevation of one of my improved milk coolers, Fig. 2 a view partly in end elevation and partly in vertical section looking in the direction indicated by the arrows from the dotted line 22 in Fig. 1, Fig. 3 a detail sectional view on an enlarged scale of the construction shown at the upper right hand corner of Fig. 1 taken on the dotted line l -4 in Fig. 2, and Fig. 4 a detail view of one of the end bars or racks.

In said drawings the portions marked A represent the frames or racks for supporting the cylinders, B said cylinders, and O C the water columns.

The racks A comprise bars or plates provided at suitable intervals apart with open sided rests or notches to receive the ends of the cylinders B. The openings into said rests are of a size to readily receive the portion of the cylinder intended to rest therein, and permit it to be removed, adjusted, and replaced without disturbing the position of the adj a cent cylinders. Their tops are each formed with a recess with ta ered sides into which may be seta trough-1i re receptacle A for receiving the milk. Said receptacle A has downwardly projecting flanges a cast to eX- tend down on the outside of said racks A to hold said receptacle in position. It is formed with a longitudinal ridge 0, in its center on each side of which a row of perforations a are formed in its bottom, as shown in Fig. 2. The lower ends of said racks A have flanges a on their outer faces which are adapted to engage under inwardly projecting flanges a on the ends of a receptacle A which is thus suspended on said lower ends and adapted to receive the milk or other liquid after passing over the cylinders B. A discharge pipe a leads from said receptacle A to any point desired.

The cylinders B are each formed of corrugated sheet metal, as shown, and in each end have a cast metal hollow bushing b, which is secured thereto by a water tight joint, preferably by soldering. Said bushings are adapted to rest in the notches or rests in the racks A and are each formed with a flange I). Said flanges project a suflicient distance beyond the outside surface of the cylinders to prevent the milk from running over the ends of said cylinders. Said cylinders are arranged in the racks A, as best shown in Fig. 1, a suflicient distance apart to provide a free air space between them, for a purpose to be presently described.

The water columns O O are each of a similar structure except that one is provided with the inlet pipe 0 and the outlet pipe 0 as shown in Fig. 1. It will be understood, of course, that the arrangement might be reversed, and that with an odd number of cylinders in the stack the inlet pipe would be on one end of the machine and the outlet on the other end. As shown in Fig. 1, both pipes are attached to the water column O on the right hand end of the machine but water column C is provided with internally screwthreaded necks c and 0 closed by screw-- and c to be transferred from one column to the other, as desired. Each column is formed with an opening for each cylinder in the stack, said opening being surrounded by a flange c and containing a packing ring 0 of cork, or other compressible material, against which the tapered and rounded outer end of each bushing I) may be forced into contact. The parts are all clam ed and secured together by clamping ro s 1, 2 and 3 formed with screw-threaded ends and having wingnuts 4, 5 and 6 respectively, thereon. Said rods extend through perforations in the racks A and through perforations in ap roriate ears 0 on the water columns 0 an C. it will thus be seen that said columns may be drawn toward each other so that the outer ends of the bushings b of the several cylinders B will be forced tightly into the outer ends of the packing rings 0 and tight joints thus secured. It will be noticed by reference to Figs. 3 and 4 that only the extreme ends of said bushings contact with said packing rings, the contact being merely the ressure of the rounded end surface on each ushing into the compressible material of the pack ing ring. By means of this particular construction the loosening of the nuts upon the clamping rods quickly releases the cylinders B from contact with the water columns sufficiently to permit them to be free to rotate in their bearings in the racks A or to be lifted out of said racks. The apparatus is preferably hung upon the outer end of the hook sha ed arm 8 forming a part of brackets attac ed to the wall of a building where the apparatus is to be used. Hooks 9 are cast on the top end of each water column adapted to engage with said hooks'8 on said brackets. By loosening the clamping rods l, 2 and 3, the cylinders B may be thoroughly washed and cleansed by being rotated in their bearings in the racks A without removing from their positions and all parts of the a paratus thus made easily accessible for c eansing, enabling it to be conveniently kept in a sanitary condition. Nuts 10 and 11 are preferably provided on the screw-threaded ortions of the clamping rods on each side 0 the racks A, whereby said racks may be rigidly su ported in just the position desired and ad usted to hold the rece tacles A and A or release them to enab e them to be removed, as desired. Should it be desired to remove one cylinder for the purpose of repair, or any other purpose, it can be readily one by reason of the open sided notches in the racks which enables any one to be lifted out Without disturbing the others.

As shown, the cold water passes in through pi e c to water column 0, then to the lower cy inder B and from thence through the water column G into the next cylinder B and back into the water column 0. A web (a is formed in each water column across the opening therein immediately beneath the passage from the cylinder B thereto, as indicated by dotted lines in Fig. 1, and as shown in section in Fig. 4. By this means the water is prevented from accumulating in what would otherwise be pockets between the parts of the water columns which form portions of the through passage for the cooling agent, and thus causing injury by freezing or other causes.

The operation is as follows: The parts beleading through the cylinders B, and discharges through the pipe 0. V The milk or other liquid to be cooled is placed in the receptacle A, is divided by the ridge a and runs through the perforations in the bottom of said receptacle down on each side of the corrugated cylinders B, dropping fromthe surface of one cylinder tothe surface of the next until it reaches the receptacle A from which it is conducted throughthe discharge pipe (1 to a filling tank, or other receptacle as desired. The corrugated form of said cylinders not only increases the area of the cooling surface but retards the flow of the liquid over it, thus increasing the efficiency of the apparatus in an important degree. The cylinders B being a distance apart, as shown in Fig. 1, the liquid in passing from one to the other is freed from the heat by the action of the air, also, passing between said cylinders, which is a material aid in the operation of the apparatus.

The general construction and operation of the device is similar to that shown in my application No. 339,470, filed Oct. 18, 1906.

Having thus fully described my said invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a milk cooler, the combination, of the frame or racks containing open-sided bearings for the cylinders, the hollow cylinders mounted in said bearings, the water columns connected with the ends of said cylinders, means for feeding the milk to said cooler, means for supplying the cooling agent, and means for clamping the several parts of the structure together, substantially as set forth.

2. A milk cooler comprising water columns and rotatable cylinders with their ends engaging said columns, suitable supporting racks adjacent to said columns having opensided rests in which the ends of said cylinders are mounted, substantially as set forth.

In witness whereof, I, have hereunto set my hand and seal at Westgrove, Pa., this 31st day of January, A. D. nineteen hundred and eight.

HENRY O. ROOT. [L.s.] \Vitnesses:

CALEB P. COOPER, J. PYLE. 

